Holiday Navigator 2003 Owner's Manual page 441

Filter Maintenance Intervals:
• Change the primary fuel/water separator filter every six months or
every 15,000 miles.
• Refer to the OEM Cummins manual for service intervals of the
secondary fuel filter.
NOTE: It is recommended to wear gloves and old clothing when
working with diesel fuel. Avoid getting any fuel into the interior
of the motorhome. Wash clothes separately.
Primary Filter System:
The primary filter system performs many functions. It filters the fuel,
detects any water that may be present in the filter and is used to prime the fuel
system. The fuel goes through the reusable pre-filter before entering the
primary filter.
When changing the filter, a suitable container will be needed to catch the
waste fuel. Properly dispose of waste fuel. Do Not reuse fuel. This will introduce
contaminants into the system.
1. Remove the thumb bolt, washer and top housing.
Remove the bowl, pre-filter and O-rings.
2. Wear safety goggles when cleaning pre-filter and
bowl in a solvent bath or use compressed air as
necessary.
3. Inspect the O-rings for cuts or damage. Replace if
needed
4. Lube O-rings with motor oil or clean fuel.
5. Install pre-filter onto bottom block. Install bowl
with arrow pointing down. Replace the top
housing making sure O-rings are properly seated.
6. Replace thumb bolt and tighten by hand. Using
pliers, turn the bolt three-quarter turn to firmly
seat the O-ring seals.
7. Remove bottom discharge line and primary filter.
Drain fuel from filter into container.
8. Lube O-ring on new filter with motor oil or clean
fuel. It is not necessary to fill the filter with fuel.
9. Install filter onto housing. Tighten an additional
three-quarter to one full turn after seat contacts
base. Install discharge line to bottom of filter.
NOTE: Over tightening may result in damage to the unit.
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N A V I G A T O R 2 0 0 3
Fuel/Water
Filter
Chassis Information
Thumb Bolt
Re-usable
Pre-filter
090261
1 0 • 4 4 1